<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>v-on指令基础</title>
</head>

<body>
  <div id="app">
      <input type="button" value="v-on指令" v-on:click="doIt">
      <input type="button" value="v-on简写" @click="doIt">
      <input type="button" value="双击事件" @dbclick="doIt">
      <h2 @click="changeFood">{{ food }}</h2>
  </div>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        var app = new Vue({
            el:"#app",
            data:{
                food:"西兰花炒蛋"
                },
                methods:{
                    doIt:function(){
                        alert("做It");
                    },
                    changeFood:function(){
                        this.food+="好好吃！"
                    }
                },
        })
    </script>
</body>
</html>